Double-ported register for fuel burners



April.l5,1930. E. HQPEABODY 1,754,433

DOUBLE PORTED REGISTER FOR FUEL BURNERS Filed Jan. 8, 1925 2Sheets-Sheet 1- Q54 1 k r 42%;? V 29 X M, a g? l WM CR ATTORNEY April1930- E. H. PEABODY v 1,754,433

DOUBLE PORTED REGISTER FOR FUEL BURNERS Filed Jan. 1225 2 Sheets- Sheet2 /72/ 22 2& g8 22 O W INVENTOR. flflfdfji Pea vcgy w qwm m calm:

ATTORNEY Patented Apr. 15, 1930 I [UNITED STATES PATENT OFFICE manner H.PEABODY, or-rELHAM MANOR, NEW YORK, Assrenoa TO rEABonY nernnnnmeCORPORATION, or new YORK, 1v. Y., A conronarron or new YORKDOUBLE-POBTED REGISTER FOR FUEL BURNERS This invention relates to oilburning equipment, particularly ofthe type where air is admitted to, andaround a conical spray of liquid; and has for its object to provide adevice 5 by which the maximum efliciency may be obtained over a verywide range in capacity, that is, from very low loads' to very highloads.

It is readily understood that the amount of air admitted arpund the oilspray, depends upon the area of air opening, or the resist ance of theso called air register, and also i the pressure or draft, under whichthe air is forced into the oil spray. I have found that in order tosecure the continuous and even to merely driftinto the furnace through alarge opening, for the reason that if this is done,a certain proportionof the air will not be mixed with the oilspray, and the mixture will beuneven and irregular and may result in setting up pulsationin the fire.Therefore, it is not possible to secure good results by making the airports of the register too great in area. On the other hand it is verydesirable to be able to burn as large a quantity of oil as possible witha minimum draft pressure, and therefore it is desirable to make the airports large, and in this way out down the resistance to the flow of theair. I have found that the area of the opening, through which the oilspray and the air pass into the furnace at low loads, has a definitelimitation.

This same area may be employed at the higher capacity also, and it isobvious that if D the area of the air port and air passage into thefurnace be limited, a very considerable increase of the air pressure isnecessary at the -higher loads.

In order to meet this condition, I have devised an apparatus whereby themaximum opening may be maintainedfor the low loads, and in which asecondary air opening may be provided for, supplementing or increasingthe area of the opening into the furnace at the high load, and thusrealize a very much higher rate of combustion, while at the same timekeeping the air pressure at a lower point than would be possibleotherwise.

In mydevice, I use an air register of standard type for controlling theadmission of air into the passage adjacent to the atomizer. This airregister is used for the lower loads and as soon as it is desired toincrease the capacity, the secondary air port is opened, admitting anadditional air supply which flows in around the smaller opening into thepassage way which leads to a larger opening. The two sizes of openingsfurther enable the operator to burn a very large quantity of oil at themaximum rates, with a moderate air pressure, while by closing thesecondary air port the smaller opening is available at the low loads.

The foregoing and other features of my invention will now be describedin connection with the accompanying drawings forming part of thespecification in which I have represented my double ported air registerin one of its applications, after which I will point out in the claimsthose features which I believe to be new and of my own invention.

In the drawings: Figure 1 is a sectional elevation of a mixing chamberand air register with my supplementary port interposed therebetween.

Figure 2 is a similar section with the supplemental air port entirelyopen, the section taken along the line 2-2 of Figure 3.

Figure 3 is a front view of my supplemental port ring with the airregister removed.

Figures 4 and ring I employ.

Figures 6 and 7 are details of apparatus for actuating the closing ring.7

Referring to the drawings, the letter A designates a portion of afurnace wall to which is secured a frusto conical member 1 constitutingthe throat of the furnace and providing a mixing chamber for the fueland air. This member has a flange which is adapted to bear against thefront wall. Supported in axial alinement with the throat is an air 5 aredetails of the closing register preferably of the type described in myPatent No. 1,527,214 granted February 24, 1925. As here shown, theregister comprises a front plate 2 and a back plate 3 held together bybolts 4, so that they are spaced apart a definite distance and heldfirmly in alinement. Upon the bolts are mounted pipe spacers 4 servingas supports for doors 5 which are hinged thereon. These doors areprovided with means for moving them simultaneously from an open to aclosed position or vice versa. The object ofthe air register is todeliver the air for combustion to the burner in proper amount with thedesired velocity and with a whirling motion, as fully described in mysaid patent to which reference may be made.

The front plate is formed with a bearing 2 in which is supported a fuelburner 6. This burner, and detachable coupling 6, may be of the typedescribed in my Patents No. 1,523,079 granted January 13, 1925, and No.1,628,424 granted May 16, 1927, to which reference may be made for amore complete description.

Secured to the back plate 3 is an annular ring 10 having a frustoconical extension 11 projecting into the furnace throat as shown inFigs. 1 and 2. The back plate 3, ring 10 and member 1 are securedtogether and to the furnace front plate A by bolts 12. Pipe spacers 13surrounding the bolts 12 hold the rin 10 and its extension 11 in spacedrelation to the furnace throat.

The space between the wall of the throat and the frusto conicalextension 11 provides an annular opening for the admission of additionalair for combustion whendesired or necessary. For the purpose ofregulating or controlling the amount of such additional air I mount uponthe back plate 3 and ring 10, and in slidable engagement therewith, adamper in the form of an annular ring 14 of such width as to completelyclose the supplemental i111 passage or to open such passage more or ess.

To effect the desired movement of the damper 14 it is formed with aseries of diagonally disposed slots 15, into which project studs 16secured to the ring 10. The damper 14 is also provided with an extension17 having a slot 18. Mounted in suitable bearings 20 and 21 is a shaft27 having a thumb nut 22 to lock it in any adjustedposition. A handle 29enables the shaft 27 to be turned in either direction. The shaft 27 hasan offset or crank section 28 which passes through and bears against thewall of slot 18 in the extension 17 so that a rotary movement, in onedirection or the other, will be imparted to the damper 14 when the shaftis turned. At the same time a forward or rearward movement will beimparted to the damper due to the pressure of the walls of the slot 15against the fixed studs 15.

I wish it distinctly understood that my double ported register hereindescribed and illustrated is in the form in which I desire to constructit and that changes or variations may be made as may be convenient ordesirable without departing from the salient features of my inventionand I therefore intend the following claims to cover such modifica-.

tions as naturally fall within the lines of invention.

I claim: I

1. In a fuel burning apparatus the combination of an atomizer, asubstantially frusto conical mixing chamber, an air register, afrusto-conical ring located between the air register and the mixingchamber, fastening means connecting the mixing chamber, ring, and airregister, spacing means carried by said fastening means for maintainingthe ring and mixing chamber in spaced relation, and means forcontrolling the entrance of air between the mixing chamber and the ring.

2. In a fuel burning apparatus the combination of an atomizer, asubstantially frustoconical mixing chamber, an air register, afrusto-conical ring located between the air register and the mixingchamber, fastening bolts connecting the mixing chamber, ring and airregister, spacing sleeves carried by said bolts for maintaining the ringand mixing chamber in spaced relation, and a sliding cylindrical memberfor controlling the entrance of air between the mixing chamber and thering. 1

3. In a fuel burning apparatusv the combination of an atomizer, asubstantially frustoconical mixing chamber fitting into an opening inthe furnace front plate, an air register, a frusto-conical ring locatedbetween the air register and mixing chamber and extending into the spacebounded by the latter, means passing through the air register, ring,mixing chamber and furnace front plate for holding the parts .inassembled relation, spacing means for maintaining a passage between themixing chamber and the ring, and means for controlling the flow of airthrough said passage.

4. In an oil burning apparatus the combination of a furnace having asubstantially frusto-conical mixing chamber with the small end adjacentthe furnace, an air register, a conical annular ring interposed betweenthe mixing chamber and the air register, and independently operablemeans for controlling the flow of air through the space between theannular ring and the mixing chamber and through the air register.

5. In an oil burning apparatus the combination of an atomizer, an airregister adapted to control the flow of air adjacent the atomizer forordinary loads, a furnace having a mixing chamber, a substantiallyfrustoconical annular ring in spaced relation to the wall of the mixingchamber and with the smaller end projecting into the mixing cham her toprovide a supplemental passage for additional air for high loads, andindependent means for controlling each air supply.

6. In a fuel burning apparatus the combi-' nation of fuel admissionmeans, a furnace having a substantially frusto conical mixing chamber,an air register adapted to deliver air adjacent to the fuel admissionmeans, a

substantially frusto conical flange extending into the mixing chamberand forming with the wall of the mixing chamber a supplemental air portadapted to deliver air around I and in front of the fuel admissionmeans,

and rotatable and slidable means for controllingthe passage of airthrough said port.

7. In combination with a furnace having a frusto conical throat, an airregister and means for supporting the same in front of said throat, afrusto conical member secured to said register and projecting into thefurnace throat in spaced relation thereto to provide a supplemental airpassage between the throat and said member, a damper mounted on saidregister, and means for moving said damper to control the flow of airthrough said passage.

In testimony whereof I a-ffix my signature.

ERNEST H. 'PEABODY.

